Device for preventing humming of telephone-wires.



No. 705,073. Patented July 22, I902.

M. GRUVER.

DEVICE FOR PREVENTING HUMMING 0F TELEPHONE WIRES.

(Application filed Sept. 6, 1901.)

(No Model.)

Wihyzsses I Mason 62701/8 r, ll azgfor Wfzm by M UNITED STATES PATENTOFFICE.

MASON GROVER, OF BIDWELL, OHIO.

DEVICE FOR PREVENTING HUM MING OF TELEPHONE-WIRES.

SPECIFICATION forming part of Letters Patent No. 705,073, dated July 22,1902.

Application filed September 6, 1901 To all whom, it may concern:

Be it known that I, MASON GRovEE, a citizen of the United States,residing at Bidwell, in the county of Gallia and State of Ohio, haveinvented a new and useful Device for Preventing Humming ofTelephone-Wires, of which the following is a specification.

This invention relates to devices for preventing humming of telephoneand telegraph wires; and it has for its object to provide a device ofthis nature that may be easily and quickly applied to a wire, will besimple and cheap of manufacture, and will be efficient in its operation,further objects and advantages of the invention being apparent from thefollowing description.

In the drawings forming a portion of this specification and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is a view showing two wires having the preventive devicesthereon and mutually connected, one of the devices being shown insection and the other in elevation. Fig. 2 is a view showing asupporting-pole carrying a single wire equipped with one of the deviceswhich is connected to the pole. Fig. 3 is an end View of the devicedetached. Fig. 4 is an end view showing the device in its normalposition ready to be placed upon a wire.

Referring now to the drawings, and more particularly to Figs. 1, 3, andat thereof, there are shown two wires, 5 and 6, on which are disposedtwo of the devices of the present invention. Each of these devicesconsists of a body 7 of rubber, which is tapered from its centralportion toward both ends, and midway of the ends of which is formed themate rior peripheral groove 8. A cylindrical pas-= sage 9 is formedaxially through the body '7, and the body is split in a plane includingthe axis and from the central bore of the body outwardly through theexterior surface, so that the body may be readily applied over a wire,so that the latter will lie in the central passage thereof. When thebody '7 has been thus disposed upon a wire, a piece of wire is passedaround it and engaged. with the pe Serial No. 74,563. (No model.)

ripheral groove thereof and is twisted to gether to hold it in place,the loop thus formed in the attaching-wire being reduced in diame= terto such a point as to close the body 7 and cause the inner surfacethereof to tightly i111 pinge the wire upon which it is placed, so thatdisplacement thereof will be presented longitudinally of such Wire.Where two of these devices are employed upon mutuallyadjacent wires 5and 6, a single attachingwire is employed, as shown, and the endsthereof are engaged with the grooves of the separate devices.

In Fig. 2 of the drawings the device is shown engaged with a wire 10,supported upon a pole 11. In this case a single wire is shown, and inthat event the attaching-wire 12 is secured at its free or outer endwith the pole.

It is found that with the use of this device the objectionable hummingnoises are pre vented, and it will be understood that in practicemodifications of the specific construction shown may be made and thatany suitable dampering material may be used and any proportions may beobserved without de parting from the spirit of the invention.

That is claimed isl. A device of the class described comprising a splitflexible body of dampering material having a passage to receive and holda wire and with which the split communicates to permit of entrance ofthe wire to the pas sage, said body having a peripheral groove toreceive an attaching-band.

2. A device of the class described compris ing a body of rubber having acentral axial passage to receive a wire, said body being split from thepassage outwardly through its side and having a peripheral groove at apoint between its ends to receive a compress ing and attaching band.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

MASON GROVER.

Witnesses:

O. A. THOMPSON,- SAMUEL E. W 1LT.-

